Why does the battery electrode need a rolling press process

After electrode coating, electrode through drying process in oven and the coated electrode becomes loose. If used directly, the cathode material and anode material is easy to fall off and damage after being soaked by electrolyte. The electrode can be pressed by the battery electrode roller machine. The stability, firmness and electrochemical properties of the pressed electrode were improved, and the test performance was better than that of the unpressed sample.

There are two main purposes of the battery electrode rolling press: the first is to eliminate burr, make the surface smooth, flat, to prevent the burr when the battery is installed to Pierce the diaphragm and cause short circuit. The second is to enhance the strength of the pole, reduce the impedance. If the pressure is too high, the film will curl, which is not conducive to battery assembly.

In the process of electrode rolling, the electrode needs to be compacted. The electrode compaction density in lab should be as close as possible in battery manufacturing. In order to measure the dynamic limit of materials, the compaction density can be regulated according to the research purpose.
If you're going to do button cell research in the lab. The high-precision manual, pneumatic and electric laboratory rolling press machine with different width and function will be your best choice. And If you're a battery factory and you're going to do large-scale battery production, The continuous hydraulic heat roller press machine is going to meet all of your needs.


This is TOB New Energy, please email us at tob.amy@tobmachine.com to discuss the details.